US2825758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current restoration circuits
Assignee: General Electric Co
•
Filing: 1952-11-26
•
Granted: 1958-03-04
•
Expires: 1972-11-26
Abstract
No abstract record available.
Inventors
- 👤 Henry E Revercomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:29
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2116671A
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US2255485A
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US2259538A
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US2240281A
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GB641949A
Cited
US2564554A
Cited
US2522967A
Cited
US2673892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |